[1]
A. G. Kirichenko, W. U. Klimik, і K. A. Kudak, «EXPERIMENTAL CONFIRMATION OF THE EXACTNESS OF ORBITAL ARTIFICIAL NEAR EARTH OBJECTS "SICH-1" MEASURINGS WITH OPTICAL INSTRUMENTS BY ASTRONOMICAL OBSERVATORIES OF UKRAINE», Одес. астроном. публ., т. 9, с. 186–187, Лис 2017.